I just spidered our website for archive purpose. All was well until the usage
of the picture tag in sliders on pages other than the root level.
httrack copied all referenced images (probably because of option "Attempt to
detect all links (even in unknown tags/javascript code)"), but no path was
adapted and though I need a relative path with up folders ('../') these images
were not 'accessible' for the browser as the path was wrong.

I consider it a big bug if 'links' are detected but not adapted to be useable
offline.